Saw-gummer



(No Model T. E. WINROD` 8v C. M. DBRRICK.

SAW GUMMBR.

No. 582,567. Patent-ed May 11,1897.

UNTED STATES PATENT i Finca.

THOMAS E. WINROD AND CHARLES M. DERRICK, OF GIBSONVILLE, CALIFORNIA.

SAW-GUMMER.

SPECIFICATION forming part of Letters Patent No. 582,567, dated May 11,1897.

Application filed August 28, 1896. Serial No. 604,190. (No model.)

To 1f/ZZ whom may concern,.-

Be it known that we, THOMAS E..W1Nnon and CHARLES M. DERRICK, citizensof the United States, residing at Gibsonville, in the county of Sierraand State of California, have invented a new and useful Saw-Gummer, ofwhich the following is a specification.

Our invention relates to saw-gummers, and has for its object to providea simple and efficient device of this class in which the sawblade may befirmly held against lateral vibration during operation, and whereby bitsmay be readily in terchanged without detaching the parts of the frame.

Further objects and advantages of this invention will appear in thefollowing description, and the novel features thereof will beparticularly pointed out in the appended claim.

In the drawings, Figure l is a perspective view of a saw-gummerconstructed in accordance with our invention. Fig. 2 is a verticalsection of the same, taken in the plane of the axis of the cutter orbit. Fig. 3 is a partial side view of the same. Fig. 4 is a detail viewin perspective of the slides, bit, and follower detached from the frame.

Similar numerals of reference indicate corresponding parts in all theflgures of the drawings.

l. designates a base from which rise the uprights 2, provided withtransversely-alined vertical guide-slots 3, the edges of the uprights atopposite sides of the slots being crosssectionally ribbed or V- shaped,as shown at 4, to fit in corresponding grooves in the contiguous edgesof the slides 5, and the upper portions of said ribs being cut away, asshown at 6, to allow the slides to be displaced laterally when arrangedin the plane of the cutaway portions. These slides constitutebearing-blocks in which is mounted the spindle 7 of the cutter or bit 8,the extremities of said cutter beingin contact with theinner surfaces ofthe slides and being thereby held from axial displacement. A feed-screw9 is threaded in a cap-plate 10, connecting the upper extremities of theuprights and secured thereto by means of thumb-screws ll, and saidfeedscrew is swiveled at its lower extremity in a follower l2, providedwith reduced extremities 13, fitting in recesses in the inner sides ofthe slides, whereby when the slides are dismounted in the manner abovedescribed the follower maybe detached therefrom, as indicated in Fig. 4.The upper end of the feedscrew is fitted with a hand-wheel 14.

In order to hold the saw-blade in position for gumming, we arrangeopposite axiallyalined clamping-screws l5 in the uprights contiguous tothe lower ends of the slots 3, adapted to impinge at their innerextremities against opposite side surfaces of the sawblade, and inasmuchas these clamping-screws are arranged contiguous to the toothedperiphery of the saw it will be understood that they are adapted to holdthe latter against vibration, and hence increase the facility andrapidity of performing the operation. The spindle of the cutter or bitis provided with a crank or operating-handle 16, which may bemanipulated by the right hand of the operator, while the left hand isemployed in securing the proper .adjustment of the cutter or bit bymeans of the feed-screw.

From the above description it will be seen that the device is simple andmay be manufactured at a small cost, and that cutters or bits ofdifferent sizes to suit the saw to be gummed may be introduced withfacility after dismounting the slides from the guides in which they arefitted, the cutter being provided with an angular boreto receive theangular portion 17 of the spindle.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the spirit orsacricing any of the advantages of this invention.

Having described our invention, what we claim is- A saw-glimmer havingparallel guides connected at one end by a cap-plate, said guides beinglongitudinally slotted to form opposite convexed guide-faces which arecut away contiguous to the cap-plate, slides mounted respectively in theguides and having concave faces to fit the opposite convex facesthereof, said slides being coextensive with said cutaway portions of theguides, whereby they are adapted to be introduced and removed at thecut-away portions, a follower arranged be- IOO tween the planes of theslides and provided with lateral projections Iitting removably inregistering sockets in the facing sides of the slides, a feed-screwthreaded in said eap-plate and swiveled at its extremity in thefollower, a spindle mounted in bearings iespeetivel)v in the slides andhaving` an intermediate cross-seetionally angular portion, a gu mining`cutter or bit removably itted upon said an- 1o gular portion of thespindle and adapted to be dismonnted therefrom when the slidcs are

